public class Person {
    public String name;
    public int age;
    public String sex;
    public Person(){

    }

    public Person(String name, int age, String sex) {
        this.name = name;
        this.age = age;
        this.sex = sex;
    }
    public Person(Person person){
        new Person("张三",12,"男");
    }
    public void showInFor(){
        System.out.println(name+" " +age+" "+sex);
    }
}
